Step 1

Prepare 13 6-oz Champagne bottles and crown caps by boiling them and drying them.

Step 2

Add gin, dry vermouth and water to a large bowl or pitcher.

Step 3

Using a funnel, pour the cocktail into the bottles, leaving about an inch of space at the top. Cap immediately with crown caps and a capper.

Step 4

Label with a sharpie (so you know what it is) and freeze.

Step 5

When serving, garnish with your choice of either a lemon twist, 2 dashes of orange bitters, an olive or a cocktail onion.